333 results found
    1. Neuroscience

    On cross-frequency phase-phase coupling between theta and gamma oscillations in the hippocampus

    Robson Scheffer-Teixeira, Adriano BL Tort
    Phase-locking of hippocampal theta and gamma waves has been proposed to support memory formation, but an analysis using robust statistical methods finds no convincing evidence for the phenomenon.
    1. Neuroscience

    Different theta frameworks coexist in the rat hippocampus and are coordinated during memory-guided and novelty tasks

    Víctor J López-Madrona et al.
    Integration and segregation of information of memory and sensory in the hippocampus could be achieved by the coordination of distinct theta-gamma coding frameworks.
    1. Neuroscience

    Effects of visual inputs on neural dynamics for coding of location and running speed in medial entorhinal cortex

    Holger Dannenberg et al.
    Spatial accuracy of grid cell firing correlates with the slope of the local field potential theta frequency vs. running speed relationship and integrates velocity signals over past time.
    1. Neuroscience

    Thalamic theta phase alignment predicts human memory formation and anterior thalamic cross-frequency coupling

    Catherine M Sweeney-Reed et al.
    Building on previous work (Sweeney-Reed et al., 2014), it is shown that the timing of the theta rhythm of the right anterior thalamic nucleus predicts human memory formation.
    1. Neuroscience

    Computational models of O-LM cells are recruited by low or high theta frequency inputs depending on h-channel distributions

    Vladislav Sekulić, Frances K Skinner
    The contribution of biophysical ion channels to neuron function can be predicted by taking advantage of an ongoing dialogue between model and experiment.
    1. Computational and Systems Biology
    2. Neuroscience

    Speech encoding by coupled cortical theta and gamma oscillations

    Alexandre Hyafil et al.
    Computational modelling shows that coupled theta and gamma oscillations in the auditory cortex can decompose speech into its syllabic constituents, and organize the neural spiking at faster timescale into a decodable format.
    1. Neuroscience

    Different types of theta rhythmicity are induced by social and fearful stimuli in a network associated with social memory

    Alex Tendler, Shlomo Wagner
    Variations in the frequency of theta brain waves enable a single network of brain regions to generate appropriate responses to stimuli with different kinds of emotional value.
    1. Computational and Systems Biology
    2. Neuroscience

    Noise promotes independent control of gamma oscillations and grid firing within recurrent attractor networks

    Lukas Solanka et al.
    Random fluctuations in neuronal firing may enable a single brain region, the medial entorhinal cortex, to perform distinct roles in cognition (by generating gamma waves) and spatial navigation (by producing a grid cell map).
    1. Neuroscience

    Quantitative properties of a feedback circuit predict frequency-dependent pattern separation

    Oliver Braganza et al.
    The feedback inhibitory microcircuit of the dentate gyrus likely boosts pattern separation during gamma oscillations.
    1. Neuroscience

    A causal role for the precuneus in network-wide theta and gamma oscillatory activity during complex memory retrieval

    Melissa Hebscher et al.
    Inhibitory noninvasive stimulation to the precuneus disrupts theta and gamma oscillatory coupling between medial temporal lobes and neocortical regions during complex personal memory retrieval.

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